first of all i would like to thank you for your service,
I come to you because i have a situation and i don't want to make a mistake. i have offered a domain: miweb.es.kz but it says that i need to unable my cloaking url. But i dont know how to do that. Thnaks for all

Probably the domain can start work if you point it to the IP listed in the Custom DNS section od the account, but with such doamin you can't use our mail services.
I suggest you to search for a free uni.cc domain registrar some of them allow DNS es to be forwarded and than you we will have a fully operation domain.